1. Mary does _______ in speaking English every day.
A．a lot of practices
B．plenty of practice
C．a number of practice
D．many more practice
【解析】practice作名词，意为“练习”，是不可数名词；a number of修饰可数名词；many也是修饰可数名词的。答案为B。注意归纳总结表示“许多”的短语后接的名词性质。
2. Much attention _______ pronunciation if you want to speak English well.
A．should pay to B．must be paid C．should be paid to D．will be taken of
【解析】根据句意“如果你想讲好英语，就应该注重发音”，“pay attention to”注重……；